mirror of
https://github.com/ThePhD/sol2.git
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108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013 Danny Y., Rapptz
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_TYPES_HPP
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#define SOL_TYPES_HPP
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#include <lua.hpp>
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#include <string>
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#include <type_traits>
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namespace sol {
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struct nil_t {};
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constexpr nil_t nil{};
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enum class type : int {
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none = LUA_TNONE,
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nil = LUA_TNIL,
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string = LUA_TSTRING,
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number = LUA_TNUMBER,
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thread = LUA_TTHREAD,
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boolean = LUA_TBOOLEAN,
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function = LUA_TFUNCTION,
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userdata = LUA_TUSERDATA,
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lightuserdata = LUA_TLIGHTUSERDATA,
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table = LUA_TTABLE
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};
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inline void type_error(lua_State* L, int expected, int actual) {
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luaL_error(L, "expected %s, received %s", lua_typename(L, expected), lua_typename(L, actual));
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}
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inline void type_assert(lua_State* L, int index, type expected) {
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int actual = lua_type(L, index);
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if(static_cast<int>(expected) != actual) {
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type_error(L, static_cast<int>(expected), actual);
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}
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}
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class table;
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class function;
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namespace detail {
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template<typename T>
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inline type arithmetic(std::true_type) {
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return type::number;
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}
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template<typename T>
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inline type arithmetic(std::false_type) {
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return type::none;
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}
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} // detail
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template<typename T>
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inline type type_of() {
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return detail::arithmetic<T>(std::is_arithmetic<T>{});
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}
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template<>
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inline type type_of<table>() {
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return type::table;
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}
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template<>
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inline type type_of<function>() {
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return type::function;
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}
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template<>
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inline type type_of<const char*>() {
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return type::string;
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}
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template<>
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inline type type_of<std::string>() {
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return type::string;
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}
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template<>
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inline type type_of<nil_t>() {
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return type::nil;
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}
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template<>
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inline type type_of<bool>() {
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return type::boolean;
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}
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} // sol
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#endif // SOL_TYPES_HPP
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